serial: sunzilog: Use uart_xmit_advance()

Take advantage of the new uart_xmit_advance() helper.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20221019091151.6692-40-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/sunzilog.c b/drivers/tty/serial/sunzilog.c
index 87425290687d5b79c6eca4db66d69b0e1e6df9d7..ccb809216e941d9283cf247d2942a195a2a502bf 100644 (file)
--- a/drivers/tty/serial/sunzilog.c
+++ b/drivers/tty/serial/sunzilog.c
@@ -508,8 +508,7 @@ static void sunzilog_transmit_chars(struct uart_sunzilog_port *up,
        ZSDELAY();
        ZS_WSYNC(channel);
 
-       xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
-       up->port.icount.tx++;
+       uart_xmit_advance(&up->port, 1);
 
        if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
                uart_write_wakeup(&up->port);
@@ -709,8 +708,7 @@ static void sunzilog_start_tx(struct uart_port *port)
                ZSDELAY();
                ZS_WSYNC(channel);
 
-               xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
-               port->icount.tx++;
+               uart_xmit_advance(port, 1);
 
                if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
                        uart_write_wakeup(&up->port);